The finely cut foliage is accented by large (for a geranium) blue-purple flowers with pale blue eyes which cover the plant from early summer to frost. Rozanne geranium is a sterile hybrid and doesn’t produce seeds, but its heritage includes other cranesbill geraniums. Easy to grow, Geranium ‘Rozanne’ is tolerant of most conditions except waterlogged soil. The moniker hails from the Greek, where geranium means crane. The fairly new hardy geranium ‘Rozanne’ spreads into a mass of long-blooming blue flowers with a white eye. Our most popular Geranium. It does very well for me, as long as I give it afternoon shade, and plenty of water. The genus is native to Europe and Asia; this a natural hy-brid of G. wallichianum ‘Buxton’s Variety’ and G. himalayense 'Rozanne' is a trademarked name; the cultivar name is 'Gerwat'. The palmately cleft leaves are broadly circular in form. 3 of 7 IVA WAGNEROVA/123RF. Origins: G. Rozanne is the result of an accidental cross in 1989 in Somerset, UK, between early-flowering G. himalayense and the later- and freely-flowering G. wallichianum ‘Buxton’s Variety’. Large, violet blue flowers with a lighter eye are produced prolifically until frost. There aren’t many hardy geraniums that will bloom year after year in S CA. Renowned for its extremely long, all-season bloom, this vigorous perennial forms a broadly spreading mound of deep green, dissected foliage. Rozanne' is the best everblooming blue flowered Geranium currently in cultivation. Geranium 'Rozanne' forms spreading mat and flowers generously. Geranium 'Rozanne' PP12175 cranesbill . Suitable for sun or shade. Native Geranium traversii is from the Chatham Islands. Adrian Bloom extols the virtues of Geranium Rozanne. The cranesbill reference is to the geranium seed capsule, which has a long beak-like column. It’s perfect for using as ground cover at the front of borders. Geranium ‘Rozanne’ bears striking deep purple flowers in contrast with mid-green foliage, for months on end. Geranium 'Rozanne'. Although White Flower Farm rates Rozanne for zones 5-8, I’ve been growing this geranium for years in So California. It looks similar to the popular ‘Ann Folkard,’ but isn’t quite so rambunctious. Both parents are native to the Himalayas. This is an easy, carefree geranium; a strong grower with a sprawling habit like 'Dilys'. Native Area: Himalayas USDA Growing Zones: 4–9 Height: 12–20 inches Sun Exposure: Full sun to part shade 02 of 16 'Rozanne' (Geranium 'Gerwat' ROZANNE') Joshua McCullough / Getty Images 'Rozanne' is a hybrid geranium cultivar that was named the 2008 Perennial Plant of the Year. Geranium ‘Rozanne’ is a patented sterile hybrid offering many great im-provements over other cultivars (U. S. Plant Patent PP12175 issued October 30, 2001). 4 of 7 AUCKLAND BOTANIC GARDENS. Deadhead spent blooms regularly to prolong flowering. Geranium Rozanne; Geranium Rozanne. A vigorous grower, the large blue flowers are a delight and cover the plant all summer. Rozanne geranium was discovered in a home garden in Somerset, England. Geranium is a genus of 422 species of annual, biennial, and perennial plants that are commonly known as geraniums or cranesbills.They are found throughout the temperate regions of the world and the mountains of the tropics, but mostly in the eastern part of the Mediterranean region.. It is hardy in zones 4 to 8. The greatest number of ornamental species are native to Europe and South Africa.